Add InitiateOnDeviceConversion method to Analytics

[AlmostMatt]

Description

Adds InitiateOnDeviceConversionMeasurementWithEmail to the Analytics API as described in go/ga4f-odm-api
On iOS this just passes through to the corresponding method in the iOS SDK
On Android this is no-op.

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Testing

Added unit and integration tests that call the function. No expectations other than that the relevant function is called since all functional logic is in underlying iOS SDK.

Manually ran integration test that calls thew new method to verify that the underlying iOS SDK logs "Failed to initiate on-device conversion measurement. GoogleAppMeasurementOnDeviceConversion dependency not linked in." if the relevant dependency is not linked in, and that the same error message is not logged if the dependency is linked. This verifies that the relevant code is being run and that the code compiles whether or not the dependency is present.

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Type of Change

Place an x the applicable box:

• Bug fix. Add the issue # below if applicable.
• New feature. A non-breaking change which adds functionality.
• Other, such as a build process or documentation change.

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Notes

• Bug fixes and feature changes require an update to the Release Notes section of release_build_files/readme.md.
• Read the contribution guidelines CONTRIBUTING.md.
• Changes to the public API require an internal API review. If you'd like to help us make Firebase APIs better, please propose your change in a feature request so that we can discuss it together.

[github-actions]

✅  Integration test succeeded!

Requested by @AlmostMatt on commit 533a317
Last updated: Mon May 30 11:03 PDT 2022
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